Electric plating hanging rod assembly for supporting a work piece to be plated and the method using the same

ABSTRACT

An electric plating hanging rod assembly for supporting a work piece to be plated, comprises a hanging rod having an upper retaining bar and a lower retaining bar; a distal end of the upper retaining bar far away from the hanging rod being pointed upwards; and a distal end of the lower retaining bar far away from the hanging rod being pointed downwards. The hanging rod extended with at least one upper supporting rod and at least one lower supporting rod which are alternatively arranged; at a distal end of the upper supporting rod far away from the hanging rod is fixed with an upper retaining bar and at a distal end of the lower supporting rod far away from the hanging rod is fixed with a lower retaining bar. A distal end of each of the upper and lower retaining is formed as a tapered reduced end.

FIELD OF THE INVENTION

The present invention relates to a plating tool and the way for performing the plating by the tool, and in particular to an electric plating hanging rod and a method for using the same.

BACKGROUND OF THE INVENTION

In electrically plating, it is often seen that the work piece to be plated is very large and thus a plating frame is used, as illustrated in FIG. 7. In plating, a hanging rod 4 is extended with a supporting rod 41 which is installed with a combining stud 411 at a distal end thereof. In use, the combining stud 411 passes through an upper hole 51 of the work piece 5. Then a nut 412 serves to lock the combining stud 411 to the work piece.

The nut 412 covers an area on the outer surface of the work piece 5. In plating, the hanging rod 4 with the work piece 5 is sunk into a plating tank (not shown), while the area covered by the nut 412 cannot be plated. This will cause a defect in plating operation. A repairing process can be performed to the area, but this is time-consumed and increases the cost. Therefore, there is an eager demand for a novel way to resolve this prior art problem.

SUMMARY OF THE INVENTION

The present invention discloses a plating hanging rod for electrically plating with a hanging work piece. The present invention comprises the following elements. A hanging rod is extended with at least one upper supporting rod and at least one lower supporting rod which are alternatively arranged. At a distal end of the upper supporting rod far away from the hanging rod is fixed with an upper retaining bar and at a distal end of the lower supporting rod far away from the hanging rod is fixed with a lower retaining bar. A distal end of the upper retaining bar far away from the hanging rod is pointed upwards; and a distal end of the lower retaining bar far away from the hanging rod is pointed downwards.

In use, the hanging rod is applied to a work piece. The work piece has an upper through hole and a lower through hole. The upper retaining bar passes through the upper through hole and the lower retaining bar passes through the lower through hole; and the upper retaining bar and the lower retaining bar are tightly engaged with the upper through hole and the lower through hole, respectively. Therefore, when the work piece with the hanging rod of the present invention is sunk into an electric plating tank (not shown), an outer surface of the work piece is not been clamped by any clamping tool so that the outer surface can be completely plated without any blind area which cannot be plated. Therefore, the whole quality in plating is promoted.

Preferably, the upper retaining bar is retained to the upper supporting rod through a movable assembling unit; and the lower retaining bar is retained to the lower supporting rod through a movable assembling unit so that the upper retaining bar and the lower retaining bar are updatable from the respective upper supporting rod and the lower supporting rod.

Moreover, a distal end of the upper retaining bar far away from the hanging rod is formed as a tapered reduced end; and a distal end of the lower retaining bar far away from the hanging rod is formed as a tapered reduced end.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the present invention.

FIG. 2 is an exploded perspective view of the present invention.

FIG. 3 is a perspective view showing that the present invention is retained to a work piece.

FIG. 4 is a perspective view showing that the present invention is retained to a work piece with a partial enlarged view about a retained state of the upper retaining bar to the through hole.

FIG. 5 shows one use of the present invention.

FIG. 6 is a flow diagram of the present invention.

FIG. 7 shows the prior art retaining structure.

BRIEF DESCRIPTION OF THE INVENTION

With reference to FIGS. 1 and 2, the present invention relates to a plating hanging rod for electrically plating with a hanging work piece. The present invention comprises the following elements.

A hanging rod 1 is extended with at least one upper supporting rod 3A and at least one lower supporting rod 3B which are alternatively arranged. At a distal end of the upper supporting rod 3A far away from the hanging rod 1 is fixed with an upper retaining bar 11 and at a distal end of the lower supporting rod 3B far away from the hanging rod 1 is fixed with a lower retaining bar 12.

A distal end of the upper retaining bar 11 far away from the hanging rod 1 is pointed upwards; and a distal end of the lower retaining bar 12 far away from the hanging rod 1 is pointed downwards.

Referring to FIGS. 3, 4 and 5, the use of the present invention is illustrated. In that the hanging rod 1 of the present invention is applied to a work piece 2. The work piece 2 has an upper through hole 21 and a lower through hole 22. The upper retaining bar 11 passes through the upper through hole 21 and the lower retaining bar 12 passes through the lower through hole 22; and the upper retaining bar 11 and the lower retaining bar 12 are tightly engaged with the upper through hole 21 and the lower through hole 22, respectively. Therefore, when the work piece 2 with the hanging rod 1 of the present invention is sunk into an electric plating tank (not shown), an outer surface of the work piece is not been clamped by any clamping tool so that the outer surface can be completely plated without any blind area which cannot be plated. Therefore, the whole quality in plating is promoted.

With reference to FIG. 2, preferably, the upper retaining bar 11 is retained to the upper supporting rod 3A through a movable assembling unit 31; and the lower retaining bar 12 is retained to the lower supporting rod 3B through a movable assembling unit 32 so that the upper retaining bar 11 and the lower retaining bar 12 are updatable from the respective upper supporting rod 3A and the lower supporting rod 3B.

With reference to FIGS. 2 and 4, a distal end of the upper retaining bar 11 far away from the hanging rod 1 is formed as a tapered reduced end; and a distal end of the lower retaining bar 12 far away from the hanging rod 1 is formed as a tapered reduced end.

With reference to FIG. 5, it is illustrated that in use of the present invention, a plurality of hanging rods 1 can be installed separately. This is suitable for the large work piece 2, such as a car safety rod.

With reference to FIG. 6, a method for plating by using the hanging rod of the present invention comprises the following steps of:

-   -   1. Taking a hanging rod 1; wherein the hanging rod 1 is retained         with an upper retaining bar 11 and a lower retaining bar 12. The         work piece 2 has an upper through hole 21 and a lower through         hole 22. A distal end of the upper retaining bar 11 far away         from the hanging rod 1 is pointed upwards; and a distal end of         the lower retaining bar 12 far away from the hanging rod 1 is         pointed downwards.     -   2. Passing the upper retaining bar 11 of the hanging rod through         the upper through hole 21 to be being tightly engaged therewith;         and passing the lower retaining bar 12 of the hanging rod 1         through the lower through hole 22 to be tightly engaged         therewith;     -   3. Sinking the hanging rod 1 with the work piece 2 into an         electric plating tank (not shown) for electrically plating.     -   4. After plating, lifting the hanging rod 1 and the work piece 2         from the tank.

The present invention is thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims. 

What is claimed is:
 1. An electric plating hanging rod assembly for supporting a work piece to be plated, comprising: a hanging rod having an upper retaining bar and a lower retaining bar; a distal end of the upper retaining bar far away from the hanging rod being pointed upwards; and a distal end of the lower retaining bar far away from the hanging rod being pointed downwards.
 2. The electric plating hanging rod assembly for supporting a work piece to be plated as claimed in claim 1, wherein the hanging rod extended with at least one upper supporting rod and at least one lower supporting rod which are alternatively arranged; at a distal end of the upper supporting rod far away from the hanging rod is fixed with an upper retaining bar and at a distal end of the lower supporting rod far away from the hanging rod is fixed with a lower retaining bar.
 3. The electric plating hanging rod assembly for supporting a work piece to be plated as claimed in claim 2, wherein the upper retaining bar is retained to the upper supporting rod through a movable assembling unit; and the lower retaining bar is retained to the lower supporting rod through a movable assembling unit so that the upper retaining bar and the lower retaining bar are updatable from the respective upper supporting rod and the lower supporting rod.
 4. The electric plating hanging rod assembly for supporting a work piece to be plated as claimed in claim 1, wherein a distal end of the upper retaining bar far away from the hanging rod is formed as a tapered reduced end; and a distal end of the lower retaining bar far away from the hanging rod is formed as a tapered reduced end.
 5. A method for supporting a work piece to be plated by using electric plating hanging rod assembly, comprising the steps of taking a hanging rod; wherein the hanging rod is retained with an upper retaining bar and a lower retaining bar; the work piece has an upper through hole and a lower through hole; a distal end of the upper retaining bar far away from the hanging rod is pointed upwards; and a distal end of the lower retaining bar far away from the hanging rod is pointed downwards; passing the upper retaining bar of the hanging rod through the upper through hole to be being tightly engaged therewith; and passing the lower retaining bar of the hanging rod through the lower through hole to be tightly engaged therewith; sinking the hanging rod with the work piece into an electric plating tank for electrically plating; and after plating, lifting the hanging rod and the work piece from the tank. 